Fitting for plumbing systems.



G. R. SCHMIDT.

FITTING FOR PLUMBING SYSTEMS.

AIPLIOATIOH rmzn we. 14, 1908.

Patented June 15, 1909. Q R N a sums-4mm 1.

Al/ameys 0. R. SCHMIDT.

FITTING FOR PLUMBING SYSTEMS.

APPLICATION FILED AUG. 14, 1908.

924,839, Patented June 15,1909.

3 SHEETS-SHEET 2.

J. Km BY 4Zm%%m Patented June 15,1909.

3 SHEETS-SHEET 8.

INVENTOR Allormy 8 CHARLES R. SCHMIDT, OF BALTIMORE, MARYLAND.

FITTING- FOR PLUMBING SYSTEMS.

Specification of Letters Patent.

Patented June 15,, 1909.

Application filed August 14, 1908. Serial No. 448,566.

To all whom it may concern:

Be it known that I, CHARLES R. SCHMIDT, a citizen of the United States, residing at Baltimore, Maryland, have invented certain new and useful Improvements in Fittings for Plumbing Systems, of which the following is a specification.

My present invention has relation to the fittings used in plumbing systems, and par ticularly to the fittings intermediate of and connecting water closets, sinks, baths or basins with the main waste or soil pipe and with the main vent pipe.

The object of my invention is to provide a novel form of connection to take the place of the ordinary or other form of bend now in use, and which shall be adapted to more cheaply and effectively vent the system or such portions thereof as are in connection with the bend and prevent the formation of a kinetic seal and consequent siphoning or blowing of the traps and do away with the expensive and complex system now in use of separately ventin each trap and fixture by a number of smal er vent pipes which easily become choked.

A further object of my invention is to provide a bend in which the venting branch is horizontal and parallel with the waste section of the bend and is so disposed as to vent the waste section near its junction with the outlet of the closet.

A further object of the invention is to provide a bend having a hump or enlargement of its bore whereby its capacity for venting is increased so as to permit of the use of connections from a plurality of trapped waste branches leading from sinks, basins, baths, etc. without dan er of the formation of kinetic seals or the c oking of the bend. A further object of the invention is to provide a novel form of T Y adapted especially for connection to and use with the bends em bodying my im rovements, such T Y being constructed wit a bell or faucet of such shape as to receive and embrace the outlet end of the bend, the said bend and faucet being in cross section of the form of two par' allel pipes of different diameter joined together at their sides.

My invention consists in the novel constructions, combinations and arrangements hereinafter more particularly described.

In the accompanying drawings: Figure 1 is a side elevation of the structure embodying my invention. Fig. 2 is apartial vertical central sectional View of the same. Fig. 3 is a transverse section on the line XX of Figs.

1 and 2. Fig. 4 is a similar section on the line YY of Figs. 1 and 2. Figs. 5 and 7 are vertical central sections of modifications.

Fig. 6 is a transverse section on the line ZZ of Fig. 5. Fi 8 is a transverse section on the line W- of Fig. 7.

The bend A which embodies the principal features of my invention is a hollow casting intended and adapted to form the connection between the outlet of a water closet bowl and the main vertical waste or soil pipe Bl This bend comprises a vertical faucet shaped inlet bowl C or mouth which receives the end of the flanges or pipe leading from the outlet passage of the closet. The contraction at the lower end of the bowl 0 indicated by the flange 0 forms a shoulder upon which the pi e rests; and below this flange the bend is fhrmed with an elbow E which leads to and is an integral part of the bend proper. Said bend at its rear half portion comprises the two parallel pipes F G, oined together one upon the other and formertin w tegral with the rest of the casting. The lowermost pipe F is the waste conduit, and is of the usual, or any required area, while the uppermost pipe G is the vent branch. Both these pipes lead to and enter or merge into the humJ H or enlargement which is a short holfow cylindrical structure of greater bore capacity or area in cross section than the combined capacities or areas of the pipes F G. The pipes F G, may be entirely separated throughout their entire length or anair space may be left in the in tervening partition. Again as shown in Figs. 5, 6, 7, 8, the bend may have a single conduit serving both as vent and waste, and in this case the spigot end of the bend will be cylindrical, and the faucet of the T Y, into which the s igot fits made correspondingly cylindrieai The hump or enlargement H is connected to and cast integral with the elbow E, and forms a communication between the elbow and the pipes F G, both elbow and pi es being of about the same diameter. The el bow E and pipe F are axially eccentric to the here or cavity of the hum and enter the same as low as possible thus leaving above the waste openings of the elbow and pipe a large venting space of imaginary crescent shape, and of considerably greater area than the pipe F. The ends of the hump form oblique walls 9 g, which are joined to the elbow E and pipes F G, as shown. This hump serves the twofold purpose of forming an air chamber of large caacity to which the vent pipe is connected liy means of a horizontal branch and also of serving as a means for the convenient connection to the main wasteof the trapped waste branches leading from other fixtures than closets without dan er of the tra s becoming siphoned. For t e purpose 0 such connections I provide the hump of the bend with bossed or flan ed and internally screw threaded openings t h, leading through the front oblique end of the hum at such points on either side of the vertical iameter, and at such angles that the water passing down therethrough while it will be projected toward the waste pipe F will enter the cavity of the hump above the horizontal waste pipe G. Under these conditions the tra ped branches or waste pipes from sinks, )ath tubs, etc., will always be fully vented and cannot be siphoned.

The T Y to which the bend is coupled at its rear ends is a hollow casting I, comprising the vertical coupling member or section B, which is connected to and forms part of the main waste or soil pipe, the vertical vent branch 7'. and the horizontal hub 11 Whichreceives the rear or spigot end of the bend. The vent branch and bend socketinghub are terminal ortions of the upwardly inclined leg '2'. tli cats with the vertical member B.

The hub or bowl i, instead of being of the usual cylindrical form is of-a shape in cross section corresponding to the shape in cross section of the united waste and vent conduits of the bend i. e., of two incomplete circles. By reason of the shape in cross section of the bend near its rear end, a single bowl or faucet i may be used, instead of a single bowl or faucet for each conduit. The construction of the bend and of the bowl t with reference to their being thus coupled is a feature of considerable importance in the compact and economical construction of the fittings, while the use, of a single bowl i facilitates packing of the joint.

The vertical vent ipe kseats in the bowl or hub k of the vent ranch i, resting on the shoulder h and vents into the T Y directly above and in close proximity to the horizontal vent conduit of the bend. If desired, provision may be made for additional waste connections by forming on the T Y, as shown at m open, threaded, connection bosses, corresponding to the bosses h at the forward end of the bend.

The joints produced at the several bowls or hubs may be packed in any a proved manner but I prefer adopting an carr in out the mode of packing made possible y ormrough which they communi.

ing double parallel circumferential grooves n n, on the interior of the bowls, which are widened near their mouths for this purpose. When the pipes or branch connections are seated in the bowls, the lower portion of the sockets are packed with oakum or other soft packing material, and molten lead is then poured into the joint filling the s ace to or near to the mouth of the bowl. s the lead shrinks on cooling its shrinking diametrically, will cause it to leave the inner surface of the bowl, and tighten upon the pipe and or spigot. The shrinkage of the lead in the axial direction of the ipe is, however, comensated or taken up y the grooves n n, the 3: ead shrinking against the lower part of the uppermost groove, and against the upper art of the lowermost groove, thus insurmg an effective water tight seal. The lead may be afterward calked at its outer surface, thus further increasing the security of the seal.

I claim: p 1. A fitting for plumbing systems, consisting of a horizontal waste conveying and venting bend, adapted to be located between a closet and a main waste pipe and composed of a hollow casting'having parallel waste and vent conduits located one-above the other, the vent conduit being above the waste, a

chamber of greater area than the waste conduits, into which both said conduits lead, and connection parts for coupling the fitting to a closet and to a main vent and drain pipe.

2. A fitting for plumbing systems, consisting of an integral casting forming a coupling bend between a closet and drain pipe and comprising a horizontal waste conduit and a vent conduit parallel with and above said waste, an enlarged cavity constituting a hump, into which both conduits lead, and connecting bosses on said hump for the attachment of waste branches fro other fittings.

3. A fitting for plumbing systems, consistin of a hollow casting comprising horizonta parallel vent and waste conduits, an enlarged vent chamber into which said conduits lead and coupling terminals, in com bination with a waste Y connection leading tot'he main waste pipe and having a vent pipe connection, said Y having a bowl of a contour in cross sectioncorresponding to the contour of the united vent and waste conduits of the fitting.

4. The combination with a fitting for plumbing systems consisting of a hollow castlng adapted to lie between the waste outlet of a water closet bowl and the main waste and vent pipes and comprising horizontal, 12 parallel waste and vent conduits of a con ing adapted to 'connect said fitting to tl ie main waste pi e and having a bowl of the contour of bot said conduits united and a vertically arranged vent branch and bowl, 130

and coupling bosses for the attachment of other waste branches.

5. A fitting for )lumbing systems, consisting of a bend, adapted to lie between the waste outlet of a water closet, and the Y leading to the main waste pipe, said bend comprising a horizontal waste conduit, a horizontal vent conduit above said waste conduit, and an enlarged cavity with which said conduits communicate and which is equal in diametrical area to that of both waste and vent conduits.

6. A fitting for plumbing systems, consisting of a hollow casting, adapted to lie between the waste outletof a water closet v and bath and basin wast es, the branch leading to the main waste pipe in which the cross sectional area at the spigot end is about equal to the combined cross sectional areas of the waste inlets and vent ducts.

7. A fitting for plumbing systems, consisting of a hollow casting forming a bend and a horizontal extension between the waste outlet of a water closet, and bath and basin wastes and the branch leading to the main waste pipe in which the cross sectional area of the extension at the spigot end is greater than the total cross sectional area of the waste inlets and vent ducts.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES R. SCHMIDT.

Witnesses Jos. B. CoNNoLLY, CLYDE B. WEIKERT. 

